Patents by Inventor Xiang Peng
Xiang Peng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100329618Abstract: Various embodiments described herein include rare earth doped glass compositions that may be used in optical fiber and rods having large core sizes. Such optical fibers and rods may be employed in fiber lasers and amplifiers. The index of refraction of the glass may be substantially uniform and may be close to that of silica in some embodiments. Possible advantages to such features include reduction of formation of additional waveguides within the core, which becomes increasingly a problem with larger core sizes.Type: ApplicationFiled: May 28, 2010Publication date: December 30, 2010Applicant: IMRA AMERICA, INC.Inventors: Liang Dong, Xiang Peng
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Patent number: 7792394Abstract: Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.Type: GrantFiled: August 7, 2008Date of Patent: September 7, 2010Assignee: IMRA America, Inc.Inventors: Liang Dong, Xiang Peng
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Publication number: 20100189390Abstract: Various embodiments described include optical fiber designs and fabrication processes for ultra high numerical aperture optical fibers (UHNAF) having a numerical aperture (NA) of about 1. Various embodiments of UHNAF may have an NA greater than about 0.7, greater than about 0.8, greater than about 0.9, or greater than about 0.95. Embodiments of UHNAF may have a small core diameter and may have low transmission loss. Embodiments of UHNAF having a sufficiently small core diameter provide single mode operation. Some embodiments have a low V number, for example, less than 2.4 and large dispersion. Some embodiments of UHNAF have extremely large negative dispersion, for example, less than about ?300 ps/nm/km in some embodiments. Systems and apparatus using UHNAF are also disclosed.Type: ApplicationFiled: April 7, 2010Publication date: July 29, 2010Applicant: IMRA AMERICA, INC.Inventors: Liang Dong, Xiang Peng, Brian K. Thomas
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Patent number: 7715672Abstract: Various embodiments described include optical fiber designs and fabrication processes for ultra high numerical aperture optical fibers (UHNAF) having a numerical aperture (NA) of about 1. Various embodiments of UHNAF may have an NA greater than about 0.7, greater than about 0.8, greater than about 0.9, or greater than about 0.95. Embodiments of UHNAF may have a small core diameter and may have low transmission loss. Embodiments of UHNAF having a sufficiently small core diameter provide single mode operation. Some embodiments have a low V number, for example, less than 2.4 and large dispersion. Some embodiments of UHNAF have extremely large negative dispersion, for example, less than about ?300 ps/nm/km in some embodiments. Systems and apparatus using UHNAF are also disclosed.Type: GrantFiled: December 18, 2008Date of Patent: May 11, 2010Assignee: IMRA America, Inc.Inventors: Liang Dong, Xiang Peng, Brian K. Thomas
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Publication number: 20100047839Abstract: The present invention provides a sensitive fluorimetric indicator for analytes determination in the oxygen-insensitive DT-diaphorase-coupled dehydrogenases assay by omitting NADH, which is generated by reaction in the presence of analytes, which presents to the applicability as a biosensor for future clinical diagnostic. Furthermore, the novel long-wavelength latent fluorimetric indicator is also a user-friendly probe for monitoring DT-diaphorase activity. The fluorescence signal revealed by this process is specific and exhibited in the near red spectrum region.Type: ApplicationFiled: February 6, 2009Publication date: February 25, 2010Applicant: NATIONAL TAIPEI UNIVERSITY OF TECHNOLOGYInventors: Sheng-Tung Huang, Yi-Xiang Peng
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Publication number: 20090123121Abstract: Various embodiments described herein include rare earth doped glass compositions that may be used in optical fiber and rods having large core sizes. Such optical fibers and rods may be employed in fiber lasers and amplifiers. The index of refraction of the glass may be substantially uniform and may be close to that of silica in some embodiments. Possible advantages to such features include reduction of formation of additional waveguides within the core, which becomes increasingly a problem with larger core sizes.Type: ApplicationFiled: October 6, 2008Publication date: May 14, 2009Applicant: IMRA AMERICA, INC.Inventors: Liang Dong, Xiang Peng
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Publication number: 20090122308Abstract: Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.Type: ApplicationFiled: August 7, 2008Publication date: May 14, 2009Inventors: Liang Dong, Xiang Peng
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Publication number: 20090098144Abstract: Insertion of HIV-1 V3 loop peptides from the viral glycoprotein gp120 into selected, immunogenic scaffold proteins results in a recombinant polypeptide that is a potent V3 immunogen. V3 immunogens include natural and consensus V3 sequences and cyclic and reverse peptides. Preferred scaffold proteins are Cholera Toxin subunit B and homologues thereof including closely related E. coli enterotoxins. Such immunogenic polypeptides induce broadly reactive anti-gp120 antibodies specific for V3 epitopes that can neutralize heterologous HIV-1 subtypes and strains. These polypeptide, methods for preparing them, and methods for inducing anti-gp120 (V3-specific) antibody) responses using them are disclosed.Type: ApplicationFiled: August 20, 2008Publication date: April 16, 2009Applicants: New York University, Molsoft LLC, University of Massachusetts, University of Medicine and Dentistry of New JerseyInventors: Susan ZOLLA-PAZNER, Miroslaw K. Gorny, Timothy J. Cardozo, Xiang-peng Kong, Ruben Abagyan, Maxim Totrov, Shan Lu, Abraham Pinter
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Publication number: 20090095023Abstract: Various embodiments described include optical fiber designs and fabrication processes for ultra high numerical aperture optical fibers (UHNAF) having a numerical aperture (NA) of about 1. Various embodiments of UHNAF may have an NA greater than about 0.7, greater than about 0.8, greater than about 0.9, or greater than about 0.95. Embodiments of UHNAF may have a small core diameter and may have low transmission loss. Embodiments of UHNAF having a sufficiently small core diameter provide single mode operation. Some embodiments have a low V number, for example, less than 2.4 and large dispersion. Some embodiments of UHNAF have extremely large negative dispersion, for example, less than about ?300 ps/nm/km in some embodiments. Systems and apparatus using UHNAF are also disclosed.Type: ApplicationFiled: December 18, 2008Publication date: April 16, 2009Applicant: IMRA AMERICA, INC.Inventors: Liang Dong, Xiang Peng, Brian K. Thomas
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Patent number: 7496260Abstract: Various embodiments described include optical fiber designs and fabrication processes for ultra high numerical aperture optical fibers (UHNAF) having a numerical aperture (NA) of about 1. Various embodiments of UHNAF may have an NA greater than about 0.7, greater than about 0.8, greater than about 0.9, or greater than about 0.95. Embodiments of UHNAF may have a small core diameter and may have low transmission loss. Embodiments of UHNAF having a sufficiently small core diameter provide single mode operation. Some embodiments have a low V number, for example, less than 2.4 and large dispersion. Some embodiments of UHNAF have extremely large negative dispersion, for example, less than about ?300 ps/nm/km in some embodiments. Systems and apparatus using UHNAF are also disclosed.Type: GrantFiled: March 27, 2007Date of Patent: February 24, 2009Assignee: IMRA America, Inc.Inventors: Liang Dong, Xiang Peng, Brian K. Thomas
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Patent number: 7450813Abstract: Various embodiments described herein include rare earth doped glass compositions that may be used in optical fiber and rods having large core sizes. Such optical fibers and rods may be employed in fiber lasers and amplifiers. The index of refraction of the glass may be substantially uniform and may be close to that of silica in some embodiments. Possible advantages to such features include reduction of formation of additional waveguides within the core, which becomes increasingly a problem with larger core sizes.Type: GrantFiled: March 29, 2007Date of Patent: November 11, 2008Assignee: IMRA America, Inc.Inventors: Liang Dong, Xiang Peng
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Publication number: 20080240663Abstract: Various embodiments described include optical fiber designs and fabrication processes for ultra high numerical aperture optical fibers (UHNAF) having a numerical aperture (NA) of about 1. Various embodiments of UHNAF may have an NA greater than about 0.7, greater than about 0.8, greater than about 0.9, or greater than about 0.95. Embodiments of UHNAF may have a small core diameter and may have low transmission loss. Embodiments of UHNAF having a sufficiently small core diameter provide single mode operation. Some embodiments have a low V number, for example, less than 2.4 and large dispersion. Some embodiments of UHNAF have extremely large negative dispersion, for example, less than about ?300 ps/nm/km in some embodiments. Systems and apparatus using UHNAF are also disclosed.Type: ApplicationFiled: March 27, 2007Publication date: October 2, 2008Applicant: IMRA America, Inc.Inventors: Liang Dong, Xiang Peng, Brian K. Thomas
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Patent number: 7418836Abstract: Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.Type: GrantFiled: March 15, 2007Date of Patent: September 2, 2008Assignee: Imra America, Inc.Inventors: Liang Dong, Xiang Peng
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Publication number: 20080069508Abstract: Various embodiments described herein include rare earth doped glass compositions that may be used in optical fiber and rods having large core sizes. Such optical fibers and rods may be employed in fiber lasers and amplifiers. The index of refraction of the glass may be substantially uniform and may be close to that of silica in some embodiments. Possible advantages to such features include reduction of formation of additional waveguides within the core, which becomes increasingly a problem with larger core sizes.Type: ApplicationFiled: March 29, 2007Publication date: March 20, 2008Inventors: Liang Dong, Xiang Peng
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Publication number: 20070264324Abstract: The use of vegetable anthraquinone derivatives and vegetable polysaccharides for treating human immunodeficiency virus(HIV); the anthraquinone derivatives and polysaccharides were obtained by CO2 supercritical extraction from plants, then the vegetable anthraquinone derivatives and vegetable polysaccharides alone or the mixture thereof were subject to test for inhibiting HIV virus, HIV virus was added to the culture plate containing emodins and Rheum hotaoense polysaccharides good growth of cells and reduction of virus amount were observed. So said emodins and Rheum hotaoense polysaccharides can be used as active ingredient to preparing drugs or foods for treating AIDS.Type: ApplicationFiled: May 17, 2007Publication date: November 15, 2007Inventors: Zhanqiu Yang, Hong Xiao, Shouhui Zhu, Xiang Peng
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Publication number: 20070163301Abstract: Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.Type: ApplicationFiled: March 15, 2007Publication date: July 19, 2007Applicant: IMRA America, Inc.Inventors: Liang Dong, Xiang Peng
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Patent number: 7209619Abstract: Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.Type: GrantFiled: December 30, 2005Date of Patent: April 24, 2007Assignee: IMRA America, Inc.Inventors: Liang Dong, Xiang Peng
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Patent number: 7129072Abstract: The determination and use of three dimensional structures of receptor protein tyrosine kinases and/or their ligands are described. One particular group of such structures includes three dimensional structures of the extracellular domain of RPTKs. The three dimensional structures of RPTKs can faciliate the design and identification of modulators of RPTK function. Other such structures can include of RPTK ligands, such as stem cell factor or a fragment thereof. Modulators of RPTK function can be used to treat diseases that are mediated by inappropriate RPTK activity.Type: GrantFiled: August 30, 2000Date of Patent: October 31, 2006Assignee: New York UniversityInventors: Joseph Schlessinger, Stevan R. Hubbard, Moosa Mohammadi, Alexander Plotnikov, Zhongtao Zhang, Xiang-Peng Kong
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Publication number: 20060193583Abstract: Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.Type: ApplicationFiled: December 30, 2005Publication date: August 31, 2006Inventors: Liang Dong, Xiang Peng